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6 papers · 1 filter
Secure Communication in the Low-SNR Regime
Mustafa Cenk Gursoy
Secrecy capacity of a multiple-antenna wiretap channel is studied in the low signal-to-noise ratio (SNR) regime. Expressions for the first and second derivatives of the secrecy cap…
Capacity Bounds for Two-Hop Interference Networks
Yi Cao, Biao Chen
This paper considers a two-hop interference network, where two users transmit independent messages to their respective receivers with the help of two relay nodes. The transmitters…
On the Optimality of Beamforming for Multi-User MISO Interference Channels with Single-User Detection
Xiaohu Shang, Biao Chen, H. Vincent Poor
For a multi-user interference channel with multi-antenna transmitters and single-antenna receivers, by restricting each receiver to a single-user detector, computing the largest ac…
Noisy-interference Sum-rate Capacity of Parallel Gaussian Interference Channels
Xiaohu Shang, Biao Chen, Gerhard Kramer +1
The sum-rate capacity of the parallel Gaussian interference channel is shown to be achieved by independent transmission across sub-channels and treating interference as noise in ea…
New Outer Bounds on the Capacity Region of Gaussian Interference Channels
Xiaohu Shang, Gerhard Kramer, Biao Chen
Recent outer bounds on the capacity region of Gaussian interference channels are generalized to -user channels with and asymmetric powers and crosstalk coefficients. The b…
An Achievable Rate Region for Interference Channels with Conferencing
Yi Cao, Biao Chen
In this paper, we propose an achievable rate region for discrete memoryless interference channels with conferencing at the transmitter side. We employ superposition block Markov en…